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Re: Closing suid root holes

daemon@ATHENA.MIT.EDU (alex)
Mon Mar 13 12:14:10 1995

Date: Mon, 13 Mar 1995 03:12:40 -0500 (EST)
From: alex <alex@bach.cis.temple.edu>
To: linux-security@tarsier.cv.nrao.edu
In-Reply-To: <199503130630.WAA09589@dandelion.com>
Reply-To: linux-security@tarsier.cv.nrao.edu


> You must be a bit out of date.  I've been running the following on Linux for
> quite some time:
> 
> /dev/sda1	/	ext2	defaults	1 1
> /dev/sda4	/u	ext2	nosuid,nodev	1 2
> /dev/sda2	swap	swap	defaults
> none		/proc	proc	defaults
> /dev/sr0	/cd1	iso9660	user,noauto,ro,noexec,nosuid,nodev,unhide
> /dev/sr1	/cd2	iso9660	user,noauto,ro,noexec,nosuid,nodev,unhide
> 
> It's already available...

In that case 90% of setuid holes can be closed. Just maintain the list of 
setuid programs on your setuid-able partition (cron job).

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